4 * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * FF Video Codec 1 (a lossless codec) decoder
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/timer.h"
37 #include "rangecoder.h"
42 static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
45 if (get_rac(c, state + 0))
50 while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
53 return AVERROR_INVALIDDATA;
57 for (i = e - 1; i >= 0; i--)
58 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
60 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
65 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
67 return get_symbol_inline(c, state, is_signed);
70 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
77 while (i < state->error_sum) { // FIXME: optimize
82 v = get_sr_golomb(gb, k, 12, bits);
83 ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
84 v, state->bias, state->error_sum, state->drift, state->count, k);
87 if (k == 0 && 2 * state->drift <= -state->count)
90 v ^= ((2 * state->drift + state->count) >> 31);
93 ret = fold(v + state->bias, bits);
95 update_vlc_state(state, v);
101 #define RENAME(name) name
102 #include "ffv1dec_template.c"
107 #define RENAME(name) name ## 32
108 #include "ffv1dec_template.c"
110 static void decode_plane(FFV1Context *s, uint8_t *src,
111 int w, int h, int stride, int plane_index,
116 sample[0] = s->sample_buffer + 3;
117 sample[1] = s->sample_buffer + w + 6 + 3;
121 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
123 for (y = 0; y < h; y++) {
124 int16_t *temp = sample[0]; // FIXME: try a normal buffer
126 sample[0] = sample[1];
129 sample[1][-1] = sample[0][0];
130 sample[0][w] = sample[0][w - 1];
133 if (s->avctx->bits_per_raw_sample <= 8) {
134 decode_line(s, w, sample, plane_index, 8);
135 for (x = 0; x < w; x++)
136 src[x*pixel_stride + stride * y] = sample[1][x];
138 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
139 if (s->packed_at_lsb) {
140 for (x = 0; x < w; x++) {
141 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
144 for (x = 0; x < w; x++) {
145 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
149 // STOP_TIMER("decode-line") }
153 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
155 RangeCoder *c = &fs->c;
156 uint8_t state[CONTEXT_SIZE];
157 unsigned ps, i, context_count;
158 memset(state, 128, sizeof(state));
160 av_assert0(f->version > 2);
162 fs->slice_x = get_symbol(c, state, 0) * f->width ;
163 fs->slice_y = get_symbol(c, state, 0) * f->height;
164 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
165 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
167 fs->slice_x /= f->num_h_slices;
168 fs->slice_y /= f->num_v_slices;
169 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
170 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
171 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
173 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
174 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
177 for (i = 0; i < f->plane_count; i++) {
178 PlaneContext * const p = &fs->plane[i];
179 int idx = get_symbol(c, state, 0);
180 if (idx >= (unsigned)f->quant_table_count) {
181 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
184 p->quant_table_index = idx;
185 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
186 context_count = f->context_count[idx];
188 if (p->context_count < context_count) {
190 av_freep(&p->vlc_state);
192 p->context_count = context_count;
195 ps = get_symbol(c, state, 0);
197 f->cur->interlaced_frame = 1;
198 f->cur->top_field_first = 1;
199 } else if (ps == 2) {
200 f->cur->interlaced_frame = 1;
201 f->cur->top_field_first = 0;
202 } else if (ps == 3) {
203 f->cur->interlaced_frame = 0;
205 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
206 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
208 if (av_image_check_sar(f->width, f->height,
209 f->cur->sample_aspect_ratio) < 0) {
210 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
211 f->cur->sample_aspect_ratio.num,
212 f->cur->sample_aspect_ratio.den);
213 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
216 if (fs->version > 3) {
217 fs->slice_reset_contexts = get_rac(c, state);
218 fs->slice_coding_mode = get_symbol(c, state, 0);
219 if (fs->slice_coding_mode != 1) {
220 fs->slice_rct_by_coef = get_symbol(c, state, 0);
221 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
222 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
223 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
224 return AVERROR_INVALIDDATA;
232 static int decode_slice(AVCodecContext *c, void *arg)
234 FFV1Context *fs = *(void **)arg;
235 FFV1Context *f = fs->avctx->priv_data;
236 int width, height, x, y, ret;
237 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
238 AVFrame * const p = f->cur;
241 for( si=0; fs != f->slice_context[si]; si ++)
244 if(f->fsrc && !p->key_frame)
245 ff_thread_await_progress(&f->last_picture, si, 0);
247 if(f->fsrc && !p->key_frame) {
248 FFV1Context *fssrc = f->fsrc->slice_context[si];
249 FFV1Context *fsdst = f->slice_context[si];
250 av_assert1(fsdst->plane_count == fssrc->plane_count);
251 av_assert1(fsdst == fs);
254 fsdst->slice_damaged |= fssrc->slice_damaged;
256 for (i = 0; i < f->plane_count; i++) {
257 PlaneContext *psrc = &fssrc->plane[i];
258 PlaneContext *pdst = &fsdst->plane[i];
260 av_free(pdst->state);
261 av_free(pdst->vlc_state);
262 memcpy(pdst, psrc, sizeof(*pdst));
264 pdst->vlc_state = NULL;
267 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
268 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
270 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
271 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
276 fs->slice_rct_by_coef = 1;
277 fs->slice_rct_ry_coef = 1;
279 if (f->version > 2) {
280 if (ff_ffv1_init_slice_state(f, fs) < 0)
281 return AVERROR(ENOMEM);
282 if (decode_slice_header(f, fs) < 0) {
283 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
284 fs->slice_damaged = 1;
285 return AVERROR_INVALIDDATA;
288 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
290 if (f->cur->key_frame || fs->slice_reset_contexts)
291 ff_ffv1_clear_slice_state(f, fs);
293 width = fs->slice_width;
294 height = fs->slice_height;
298 if (fs->ac == AC_GOLOMB_RICE) {
299 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
300 get_rac(&fs->c, (uint8_t[]) { 129 });
301 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
302 init_get_bits(&fs->gb,
303 fs->c.bytestream_start + fs->ac_byte_count,
304 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
307 av_assert1(width && height);
308 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
309 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
310 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
311 const int cx = x >> f->chroma_h_shift;
312 const int cy = y >> f->chroma_v_shift;
313 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
315 if (f->chroma_planes) {
316 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
317 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
319 if (fs->transparency)
320 decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
321 } else if (f->colorspace == 0) {
322 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
323 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
324 } else if (f->use32bit) {
325 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
326 p->data[1] + ps * x + y * p->linesize[1],
327 p->data[2] + ps * x + y * p->linesize[2] };
328 decode_rgb_frame32(fs, planes, width, height, p->linesize);
330 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
331 p->data[1] + ps * x + y * p->linesize[1],
332 p->data[2] + ps * x + y * p->linesize[2] };
333 decode_rgb_frame(fs, planes, width, height, p->linesize);
335 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
337 get_rac(&fs->c, (uint8_t[]) { 129 });
338 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
340 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
341 fs->slice_damaged = 1;
347 ff_thread_report_progress(&f->picture, si, 0);
352 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
356 uint8_t state[CONTEXT_SIZE];
358 memset(state, 128, sizeof(state));
360 for (v = 0; i < 128; v++) {
361 unsigned len = get_symbol(c, state, 0) + 1;
363 if (len > 128 - i || !len)
364 return AVERROR_INVALIDDATA;
367 quant_table[i] = scale * v;
372 for (i = 1; i < 128; i++)
373 quant_table[256 - i] = -quant_table[i];
374 quant_table[128] = -quant_table[127];
379 static int read_quant_tables(RangeCoder *c,
380 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
383 int context_count = 1;
385 for (i = 0; i < 5; i++) {
386 int ret = read_quant_table(c, quant_table[i], context_count);
389 context_count *= ret;
390 if (context_count > 32768U) {
391 return AVERROR_INVALIDDATA;
394 return (context_count + 1) / 2;
397 static int read_extra_header(FFV1Context *f)
399 RangeCoder *const c = &f->c;
400 uint8_t state[CONTEXT_SIZE];
402 uint8_t state2[32][CONTEXT_SIZE];
405 memset(state2, 128, sizeof(state2));
406 memset(state, 128, sizeof(state));
408 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
409 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
411 f->version = get_symbol(c, state, 0);
412 if (f->version < 2) {
413 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
414 return AVERROR_INVALIDDATA;
416 if (f->version > 2) {
417 c->bytestream_end -= 4;
418 f->micro_version = get_symbol(c, state, 0);
419 if (f->micro_version < 0)
420 return AVERROR_INVALIDDATA;
422 f->ac = get_symbol(c, state, 0);
424 if (f->ac == AC_RANGE_CUSTOM_TAB) {
425 for (i = 1; i < 256; i++)
426 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
429 f->colorspace = get_symbol(c, state, 0); //YUV cs type
430 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
431 f->chroma_planes = get_rac(c, state);
432 f->chroma_h_shift = get_symbol(c, state, 0);
433 f->chroma_v_shift = get_symbol(c, state, 0);
434 f->transparency = get_rac(c, state);
435 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
436 f->num_h_slices = 1 + get_symbol(c, state, 0);
437 f->num_v_slices = 1 + get_symbol(c, state, 0);
439 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
440 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
441 f->chroma_h_shift, f->chroma_v_shift);
442 return AVERROR_INVALIDDATA;
445 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
446 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
448 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
449 return AVERROR_INVALIDDATA;
452 f->quant_table_count = get_symbol(c, state, 0);
453 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
454 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
455 f->quant_table_count = 0;
456 return AVERROR_INVALIDDATA;
459 for (i = 0; i < f->quant_table_count; i++) {
460 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
461 if (f->context_count[i] < 0) {
462 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
463 return AVERROR_INVALIDDATA;
466 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
469 for (i = 0; i < f->quant_table_count; i++)
470 if (get_rac(c, state)) {
471 for (j = 0; j < f->context_count[i]; j++)
472 for (k = 0; k < CONTEXT_SIZE; k++) {
473 int pred = j ? f->initial_states[i][j - 1][k] : 128;
474 f->initial_states[i][j][k] =
475 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
479 if (f->version > 2) {
480 f->ec = get_symbol(c, state, 0);
481 if (f->micro_version > 2)
482 f->intra = get_symbol(c, state, 0);
485 if (f->version > 2) {
487 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
488 f->avctx->extradata, f->avctx->extradata_size);
489 if (v || f->avctx->extradata_size < 4) {
490 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
491 return AVERROR_INVALIDDATA;
493 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
496 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
497 av_log(f->avctx, AV_LOG_DEBUG,
498 "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d CRC:0x%08X\n",
499 f->version, f->micro_version,
502 f->avctx->bits_per_raw_sample,
503 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
505 f->num_h_slices, f->num_v_slices,
506 f->quant_table_count,
514 static int read_header(FFV1Context *f)
516 uint8_t state[CONTEXT_SIZE];
517 int i, j, context_count = -1; //-1 to avoid warning
518 RangeCoder *const c = &f->slice_context[0]->c;
520 memset(state, 128, sizeof(state));
522 if (f->version < 2) {
523 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
524 unsigned v= get_symbol(c, state, 0);
526 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
527 return AVERROR_INVALIDDATA;
530 f->ac = get_symbol(c, state, 0);
532 if (f->ac == AC_RANGE_CUSTOM_TAB) {
533 for (i = 1; i < 256; i++)
534 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
537 colorspace = get_symbol(c, state, 0); //YUV cs type
538 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
539 chroma_planes = get_rac(c, state);
540 chroma_h_shift = get_symbol(c, state, 0);
541 chroma_v_shift = get_symbol(c, state, 0);
542 transparency = get_rac(c, state);
543 if (colorspace == 0 && f->avctx->skip_alpha)
546 if (f->plane_count) {
547 if (colorspace != f->colorspace ||
548 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
549 chroma_planes != f->chroma_planes ||
550 chroma_h_shift != f->chroma_h_shift ||
551 chroma_v_shift != f->chroma_v_shift ||
552 transparency != f->transparency) {
553 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
554 return AVERROR_INVALIDDATA;
558 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
559 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
560 chroma_h_shift, chroma_v_shift);
561 return AVERROR_INVALIDDATA;
564 f->colorspace = colorspace;
565 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
566 f->chroma_planes = chroma_planes;
567 f->chroma_h_shift = chroma_h_shift;
568 f->chroma_v_shift = chroma_v_shift;
569 f->transparency = transparency;
571 f->plane_count = 2 + f->transparency;
574 if (f->colorspace == 0) {
575 if (!f->transparency && !f->chroma_planes) {
576 if (f->avctx->bits_per_raw_sample <= 8)
577 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
579 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
580 } else if (f->transparency && !f->chroma_planes) {
581 if (f->avctx->bits_per_raw_sample <= 8)
582 f->avctx->pix_fmt = AV_PIX_FMT_YA8;
584 return AVERROR(ENOSYS);
585 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
586 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
587 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
588 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
589 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
590 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
591 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
592 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
594 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
595 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
596 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
597 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
598 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
600 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
601 f->packed_at_lsb = 1;
602 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
603 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
604 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
605 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
607 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
608 f->packed_at_lsb = 1;
609 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
610 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
611 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
612 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
614 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
615 f->packed_at_lsb = 1;
616 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
617 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
618 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
619 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
621 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
622 f->packed_at_lsb = 1;
623 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
624 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
625 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
626 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
628 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
629 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
630 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
631 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
632 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
634 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
635 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
636 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
637 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
638 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
641 } else if (f->colorspace == 1) {
642 if (f->chroma_h_shift || f->chroma_v_shift) {
643 av_log(f->avctx, AV_LOG_ERROR,
644 "chroma subsampling not supported in this colorspace\n");
645 return AVERROR(ENOSYS);
647 if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
648 f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
649 else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
650 f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
651 else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
652 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
653 else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
654 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
655 else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
656 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
657 else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
658 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
659 else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
660 f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
664 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
665 return AVERROR(ENOSYS);
667 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
668 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
669 return AVERROR(ENOSYS);
672 ff_dlog(f->avctx, "%d %d %d\n",
673 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
674 if (f->version < 2) {
675 context_count = read_quant_tables(c, f->quant_table);
676 if (context_count < 0) {
677 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
678 return AVERROR_INVALIDDATA;
680 f->slice_count = f->max_slice_count;
681 } else if (f->version < 3) {
682 f->slice_count = get_symbol(c, state, 0);
684 const uint8_t *p = c->bytestream_end;
685 for (f->slice_count = 0;
686 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
688 int trailer = 3 + 5*!!f->ec;
689 int size = AV_RB24(p-trailer);
690 if (size + trailer > p - c->bytestream_start)
695 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
696 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
697 return AVERROR_INVALIDDATA;
700 for (j = 0; j < f->slice_count; j++) {
701 FFV1Context *fs = f->slice_context[j];
703 fs->packed_at_lsb = f->packed_at_lsb;
705 fs->slice_damaged = 0;
707 if (f->version == 2) {
708 fs->slice_x = get_symbol(c, state, 0) * f->width ;
709 fs->slice_y = get_symbol(c, state, 0) * f->height;
710 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
711 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
713 fs->slice_x /= f->num_h_slices;
714 fs->slice_y /= f->num_v_slices;
715 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
716 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
717 if ((unsigned)fs->slice_width > f->width ||
718 (unsigned)fs->slice_height > f->height)
719 return AVERROR_INVALIDDATA;
720 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
721 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
722 return AVERROR_INVALIDDATA;
725 for (i = 0; i < f->plane_count; i++) {
726 PlaneContext *const p = &fs->plane[i];
728 if (f->version == 2) {
729 int idx = get_symbol(c, state, 0);
730 if (idx > (unsigned)f->quant_table_count) {
731 av_log(f->avctx, AV_LOG_ERROR,
732 "quant_table_index out of range\n");
733 return AVERROR_INVALIDDATA;
735 p->quant_table_index = idx;
736 memcpy(p->quant_table, f->quant_tables[idx],
737 sizeof(p->quant_table));
738 context_count = f->context_count[idx];
740 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
743 if (f->version <= 2) {
744 av_assert0(context_count >= 0);
745 if (p->context_count < context_count) {
747 av_freep(&p->vlc_state);
749 p->context_count = context_count;
756 static av_cold int decode_init(AVCodecContext *avctx)
758 FFV1Context *f = avctx->priv_data;
761 if ((ret = ff_ffv1_common_init(avctx)) < 0)
764 if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
767 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
770 avctx->internal->allocate_progress = 1;
775 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
777 uint8_t *buf = avpkt->data;
778 int buf_size = avpkt->size;
779 FFV1Context *f = avctx->priv_data;
780 RangeCoder *const c = &f->slice_context[0]->c;
782 uint8_t keystate = 128;
786 if (f->last_picture.f)
787 ff_thread_release_buffer(avctx, &f->last_picture);
788 FFSWAP(ThreadFrame, f->picture, f->last_picture);
790 f->cur = p = f->picture.f;
792 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
793 /* we have interlaced material flagged in container */
794 p->interlaced_frame = 1;
795 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
796 p->top_field_first = 1;
800 ff_init_range_decoder(c, buf, buf_size);
801 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
803 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
804 if (get_rac(c, &keystate)) {
807 if ((ret = read_header(f)) < 0)
811 if (!f->key_frame_ok) {
812 av_log(avctx, AV_LOG_ERROR,
813 "Cannot decode non-keyframe without valid keyframe\n");
814 return AVERROR_INVALIDDATA;
819 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
822 if (avctx->debug & FF_DEBUG_PICT_INFO)
823 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
824 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
826 ff_thread_finish_setup(avctx);
828 buf_p = buf + buf_size;
829 for (i = f->slice_count - 1; i >= 0; i--) {
830 FFV1Context *fs = f->slice_context[i];
831 int trailer = 3 + 5*!!f->ec;
834 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
835 else v = buf_p - c->bytestream_start;
836 if (buf_p - c->bytestream_start < v) {
837 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
838 ff_thread_report_progress(&f->picture, INT_MAX, 0);
839 return AVERROR_INVALIDDATA;
844 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
846 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
847 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
848 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
849 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
850 } else if (ts != AV_NOPTS_VALUE) {
851 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
853 av_log(f->avctx, AV_LOG_ERROR, "\n");
855 fs->slice_damaged = 1;
857 if (avctx->debug & FF_DEBUG_PICT_INFO) {
858 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
863 ff_init_range_decoder(&fs->c, buf_p, v);
865 fs->c.bytestream_end = buf_p + v;
871 avctx->execute(avctx,
873 &f->slice_context[0],
878 for (i = f->slice_count - 1; i >= 0; i--) {
879 FFV1Context *fs = f->slice_context[i];
881 if (fs->slice_damaged && f->last_picture.f->data[0]) {
882 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
883 const uint8_t *src[4];
885 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
886 for (j = 0; j < 4; j++) {
887 int pixshift = desc->comp[j].depth > 8;
888 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
889 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
890 dst[j] = p->data[j] + p->linesize[j] *
891 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
892 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
893 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
895 av_image_copy(dst, p->linesize, src,
896 f->last_picture.f->linesize,
902 ff_thread_report_progress(&f->picture, INT_MAX, 0);
906 if (f->last_picture.f)
907 ff_thread_release_buffer(avctx, &f->last_picture);
909 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
918 static int init_thread_copy(AVCodecContext *avctx)
920 FFV1Context *f = avctx->priv_data;
924 f->last_picture.f = NULL;
925 f->sample_buffer = NULL;
926 f->max_slice_count = 0;
929 for (i = 0; i < f->quant_table_count; i++) {
930 av_assert0(f->version > 1);
931 f->initial_states[i] = av_memdup(f->initial_states[i],
932 f->context_count[i] * sizeof(*f->initial_states[i]));
935 f->picture.f = av_frame_alloc();
936 f->last_picture.f = av_frame_alloc();
938 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
945 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
947 fsdst->version = fsrc->version;
948 fsdst->micro_version = fsrc->micro_version;
949 fsdst->chroma_planes = fsrc->chroma_planes;
950 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
951 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
952 fsdst->transparency = fsrc->transparency;
953 fsdst->plane_count = fsrc->plane_count;
954 fsdst->ac = fsrc->ac;
955 fsdst->colorspace = fsrc->colorspace;
957 fsdst->ec = fsrc->ec;
958 fsdst->intra = fsrc->intra;
959 fsdst->slice_damaged = fssrc->slice_damaged;
960 fsdst->key_frame_ok = fsrc->key_frame_ok;
962 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
963 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
964 fsdst->slice_count = fsrc->slice_count;
965 if (fsrc->version<3){
966 fsdst->slice_x = fssrc->slice_x;
967 fsdst->slice_y = fssrc->slice_y;
968 fsdst->slice_width = fssrc->slice_width;
969 fsdst->slice_height = fssrc->slice_height;
974 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
976 FFV1Context *fsrc = src->priv_data;
977 FFV1Context *fdst = dst->priv_data;
984 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
985 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
986 struct FFV1Context *slice_context[MAX_SLICES];
987 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
988 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
990 memcpy(fdst, fsrc, sizeof(*fdst));
991 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
992 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
993 fdst->picture = picture;
994 fdst->last_picture = last_picture;
995 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
996 FFV1Context *fssrc = fsrc->slice_context[i];
997 FFV1Context *fsdst = fdst->slice_context[i];
998 copy_fields(fsdst, fssrc, fsrc);
1000 av_assert0(!fdst->plane[0].state);
1001 av_assert0(!fdst->sample_buffer);
1004 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1007 ff_thread_release_buffer(dst, &fdst->picture);
1008 if (fsrc->picture.f->data[0]) {
1009 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1019 AVCodec ff_ffv1_decoder = {
1021 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1022 .type = AVMEDIA_TYPE_VIDEO,
1023 .id = AV_CODEC_ID_FFV1,
1024 .priv_data_size = sizeof(FFV1Context),
1025 .init = decode_init,
1026 .close = ff_ffv1_close,
1027 .decode = decode_frame,
1028 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1029 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1030 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1031 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1032 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP